🔹 General Rails Project Setup Questions

  1. What does the command rails new neo_app do?

    • Creates a new Rails application named neo_app with a default folder structure, Gemfile, and configuration files.

  2. What is the difference between rails new appname and rails new .?

    • rails new appname creates a new folder.

    • rails new . initializes a Rails project in the current directory.

  3. What is the purpose of the Gemfile generated by Rails?

    • Defines Ruby gems required for the project.

    • Managed via bundle install.

🔹 Database Option (-d postgresql)

  1. What does -d postgresql mean in rails new?

    • Configures Rails to use PostgreSQL as the database instead of default SQLite.

  2. How do you configure database credentials in Rails?

    • Inside config/database.yml using environment variables (or Rails credentials).

  3. How do you create the database after setup?

    • rails db:create

  4. What are the advantages of PostgreSQL over SQLite in Rails?

    • Better performance for large apps.

    • Supports advanced features (JSONB, full-text search).

    • Suitable for production.


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